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Custom Software Development Firms in the USA With Best Reviews

Last Updated on June 24, 2025June 24, 2025 Leave a Comment
This post may contain affiliate links. Affiliate Disclosure.This post may contain affiliate links. Financial Panther has partnered with AwardWallet and CardRatings for our coverage of credit card products. Financial Panther, AwardWallet, and CardRatings may receive a commission from card issuers. Some or all of the card offers that appear on the website are from advertisers. Compensation may impact on how and where card products appear on the site. The site does not include all card companies, or all available card offers. Opinions, reviews, analyses & recommendations are the author’s alone, and have not been reviewed, endorsed or approved by any of these entities.

Custom software comes in different forms — a simple mobile app, a user-friendly website, or an elaborate enterprise system. Each business has its needs, which are largely determined by the industry and the target audience.

The top AI agent development companies take into consideration the needs of clients and can come up with unique solutions to boost business growth. For this article, we browsed the web to find the software development firms with the most favorable reviews. Other important aspects of their work that we considered include:

  • Appearance in the lists of the top companies on reputable platforms
  • Selection of development and design services
  • Verified testimonials from clients
  • Experience and industry knowledge
  • Technical strength of the team
  • Presence of AI and ML services

Selecting the right provider shouldn’t be taken lightly. Learn about the 5 most trusted partners for artificial intelligence development in 2025. 

Inoxoft 

Inoxoft is an expert custom AI agent development company that has been growing fast since its foundation in 2014. Over the 10+ years, the company has increased the team to cover crucial digital services. Inoxoft’s main presence is in Philadelphia, Pennsylvania, with additional offices in Eastern Europe.

Inoxoft’s team can help you scale your business by delivering the following services:

  • Advanced custom software development for mobile apps and web platforms
  • Implementation of AI and ML in software, including generative AI
  • Creative UI/UX design of varied complexity
  • QA and testing to enhance user experience
  • Extensive strategic consulting services
  • Discovery and product strategy
  • DevOps and cloud infrastructure
  • Advanced analytics

It’s not just positive reviews from clients that reflect the company’s professionalism. Industry recognition is another stand-out feature, as the company has numerous awards from Clutch. Moreover, Inoxoft is a Google Cloud Partner, Google Gold Partner, and ISTQB Silver Partner.

The impressive portfolio of Inoxoft features over 200 projects, among which their work with Nivea, Toshiba, Synergy 3D, and Vestel. This company develops software and offers consulting to businesses in real estate, fintech, logistics, education, and more.

NextLink Labs

NextLink Labs is another one of the best AI agent developers with plenty of positive reviews online. The development company is based in Pittsburgh, Pennsylvania, and currently has a medium-sized team of up to 50 employees. NextLink Labs has extensive experience, as it has been around since 2014.

The team specializes in the following development spheres:

  • Full-stack custom software development
  • Cybersecurity solutions development
  • Extensive mobile app modernization
  • Consulting on DevOps and DevSecOps
  • Technical training

The company has been recognized for its work by GitLab and had plenty of reputable clients over the years. Some of them include Accu-Trade and Carnegie Robotics. The focus of NextLink Labs is mostly on the manufacturing, healthcare, and finance industries.

Diffco

Diffco is rightly mentioned among the best AI and ML software development companies, as the company has the results to show for this title. Since its establishment in 2008, Diffco has completed projects for over 400 clients. They actively develop AI-based solutions and personalized software. 

The team is based in Sunnyvale, California, and provides such core services:

  • Web, mobile, and cross-platform software development
  • AI, ML, and computer vision development
  • Team augmentation
  • Complete back-end support
  • Blockchain, data analytics, and DevOps

The team features up to 200 experts and serves clients all over the world. In terms of industries, the primary focus is on logistics, e-commerce, fintech, gaming, and healthcare. If you are interested in Diffco’s clients, you may recognize Food Rocket and Nokia Care.

Door3

Door3 is a custom AI agent development firm from New York City, USA. This company began its development work in 2002 and since then opened several offices in Europe. It is both a custom software development and consultancy agency, so you can pick and choose the suitable services. 

If you are interested in collaboration, the provider is known for:

  • Enterprise-grade systems, web, and mobile software development
  • Mobile application and portal development
  • DevOps and cloud engineering
  • AI-based automation integration and analytics
  • UX/UI design
  • Data visualization
  • Staff augmentation and consulting

With Digital Design and Clutch awards, the expertise of Door3 is obvious. The clients that chose to work with this team include PepsiCo and New Balance.

Plego Technologies

Last but not least, we chose Plego Technologies for the selection of custom AI agent development agencies. Currently located in Downers Grove, Illinois, the company also has offices in Houston, Chicago, and Dubai. Their experience spans over 20 years, and they remain a team of up to 50 specialists.

With their selection of services, you will find most digital solutions in one place:

  • Personalized mobile and web app development
  • NLP, ML, and AI integration solutions
  • Strategy consulting
  • DevOps and cloud services
  • Full-service product development

Whether you already have software that needs refining or you need one created from scratch, Plego Technologies takes on such challenges. Their notable clients include Samsung, Fitbit, and Motorola.

Final Thoughts 

Because of the high level of competition, most businesses these days cannot survive on cookie-cutter digital solutions. Custom software opens the doors to improved productivity, higher client numbers, more sales, and better user experience.

The mentioned top AI&ML software development companies in the USA deliver impressive results, which is obvious from the satisfied customer reviews. You can collaborate with these specialists in developing software that will be an ideal representation of your brand and its values.

This post may contain affiliate links. Financial Panther has partnered with AwardWallet and CardRatings for our coverage of credit card products. Financial Panther, AwardWallet, and CardRatings may receive a commission from card issuers. Some or all of the card offers that appear on the website are from advertisers. Compensation may impact on how and where card products appear on the site. The site does not include all card companies, or all available card offers. Opinions, reviews, analyses & recommendations are the author’s alone, and have not been reviewed, endorsed or approved by any of these entities.

More Recommended Ebike/Scooters

Check out these other ebikes and scooters I've reviewed:

  • Urban Arrow Ebike – Last year, I made one of the largest purchases I’ve ever made – I bought a $9,000 electric cargo bike from Urban Arrow. In my Urban Arrow review, I will discuss what it is and why I decided to buy this bike, as well as discuss how impactful a bike like this can be on your journey to financial independence.
  • Troxus Explorer Step-Thru Ebike – The Troxus Explorer Step-Thru is a fat-tire ebike that I’ve had the pleasure of riding for a while now. It has amazing power, great looks, and awesome range. If you’re looking for a great fat-tire ebike that offers a lot for the price, the Troxus Explorer Step-Thru is definitely one for you to consider. Check out my Troxus Explorer Step-Thru Review.
  • Hovsco HovBeta Ebike – The HovBeta is a folding ebike with great specs and a lot of interesting features, and importantly, it’s sold at a good price point. I’ve had a blast commuting with it and using it to do deliveries with DoorDash, Uber Eats, and Grubhub. Check out my Hovsco HovBeta Ebike Review.
  • Vanpowers Manidae Ebike – The Vanpowers Manidae is a fat tire ebike that I’ve been riding as my primary winter commuting bike and have also been using it to do food delivery with apps like DoorDash, Uber Eats, and Grubhub. After clocking in a decent number of miles with this ebike, I wanted to write a post sharing what my experience with the Vanpowers Manidae ebike has been like. Check out my Vanpowers Manidae Review.
  • Sohamo S3 Step-Thru Folding EBike Review – A Great Value Folding Ebike – The Sohamo S3 Step-Thru Folding Ebike is an entry-level folding ebike that offers a lot of value for the price point. I’ve been riding the Sohamo S3 for a while now, putting the bike through its paces, and I have to say, this bike has exceeded all of my expectations. Check out my Sohamo Review.
  • KBO Flip Ebike – The KBO Flip is an excellent bike. I’ve had a great time riding it and think it’s a versatile bike that can be used for a lot of purposes and can fit a variety of lifestyles. It’s worked out great for me as a general commuter bike and as a food delivery bike. Check out my KBO Flip Review.
  • Hiboy P7 Commuter Ebike – The Hiboy P7 is an excellent electric commuter bike that’s offered at an affordable price point. The range and speed of this bike are both very good, so you won’t have any trouble getting anywhere you need to go with it. As a food delivery vehicle, this is also good – with how much range it offers, you’ll be able to work all day on a single charge. Check out my Hiboy P7 Commuter Electric Bike Review.
  • Himiway Escape Ebike – The Himiway Escape is an interesting bike for anyone looking for a moped-style ebike. If you’re a gig economy worker, the Himiway Escape is particularly interesting and it’s possible to think of it as an investment, especially if you can opt to do deliveries with the Himiway versus using a car. It’s not cheap, but you can definitely make your money back when you compare the mileage you’ll put on your car versus using an ebike. Check out my Himiway Escape Bike Review.
  • Espin Sport Ebike – The Espin Sport is a good ebike for someone who is looking for an ebike that feels and rides more like a regular bike. There are many ebikes that are really only bikes in name. In reality, they’re basically electric mopeds. The Espin Sport, by contrast, is a bike you could probably ride without the battery and you’d feel like you’re just riding a regular bike. Check out my Espin Sport Review.
  • Varla Eagle One Scooter – The Varla Eagle One is an excellent scooter that can make sense for a lot of people. It can work as a primary mode of transportation. You can use it to work on gig economy apps like DoorDash, Uber Eats, and Grubhub. And it can also be a recreational vehicle if you’d prefer to use it for that. Check out my Varla Eagle One Review.
  • Varla Falcon Scooter – The Varla Falcon is an excellent scooter that offers a good amount of power at a lower price point compared to more powerful scooters. It’s not exactly an entry-level scooter, nor is it a high-powered scooter. I think it fits somewhere in-between those two categories – an intermediate scooter if I had to give it a category. Check out my Varla Falcon Review.
  • Hiboy S2 Scooter – The Hiboy S2 is an excellent entry-level commuter scooter that's perfect for someone looking to save some money in transportation costs and improve their commute. Check out my Hiboy S2 Review.
  • Hiboy S2R Scooter – The Hiboy S2R is one of the more interesting electric scooters I’ve been able to test out. It’s not a high-powered scooter, but for an everyday transport option, it’s very useful, especially given some of the unique features that it has. Indeed, for the price, the Hiboy S2R might be the best value scooter I’ve used. Check out my Hiboy S2R Review.
  • Fucare H3 Scooter – The Fucare H3 is a fun scooter and I’ve enjoyed testing it out. For a daily commuter or quick trips or errands, the Fucare H3 is probably the scooter I’ll use. It’s portable and easy to maneuver, so it’s just easier to take on the road when I need it. Check out my Fucare H3 Scooter Review.

More Recommended Investing App Bonuses

For additional investing app bonuses, be sure to check out the ones below:

  • M1 Finance ($100) – This is a great robo-advisor that has no fees and allows you to create a customized portfolio based on your risk tolerance. You also get $100 for opening an account. Check out my M1 Finance Referral Bonus – Step-By-Step Guide.
  • SoFi Invest ($25) – SoFi Invest is an easy brokerage account bonus that you can earn with just a few minutes of work. Use my SoFi Invest referral link, fund your SoFi Invest brokerage account with just $10 and you’ll get $25 of free stock. I also have a step-by-step guide for the SoFi Invest referral bonus.
  • Webull (20 free stock shares) – Webull's current promotion gives you 20 free shares valued between $3-$3,000 each if you open an account using my referral link. Here’s a guide I wrote about how to earn your free shares using Webull.
  • Moomoo (15 free stocks) – Moomoo is a free investing app currently offering 2 different referral bonuses if you open an account using a referral link. Read my Moomoo referral bonus guide for more information.
  • Robinhood (1 free stock) – Robinhood gives you a free stock valued between $2.50-$225 if you open an account using my referral link.
  • Public (1 free stock) - Public gives you a free stock valued between $3-$70 if you open an account using my referral link.

More Recommended Bank Account Bonuses

If you’re looking for more easy bank bonuses, check out the below options. These bonuses are all easy to earn and have no fees or minimum balance requirements to worry about.

  • Upgrade ($200) – Upgrade is a free checking account that’s currently offering a $200 referral bonus if you open an account and complete a direct deposit. These bonus terms are easy to meet, so it’s well worth doing this bonus as soon as you can. Here’s a post I wrote with more details: Upgrade $200 Referral Bonus – Step By Step Directions.
  • Ally Bank ($100) – Of all the banks out there, Ally is, without a doubt, my favorite. At the moment, Ally is offering $100 to customers who open an eligible Ally account and meet the requirements. Here are the step-by-step directions to earn your Ally Bank referral bonus.
  • Fairwinds Credit Union ($175) – Fairwinds Credit Union is offering a referral bonus for users that sign up using a referral link. Fairwinds has no fees or minimum balance, so this is a particularly easy bonus to earn. Since this is a smaller credit union, my gut instinct tells me this offer won’t be around long, so if you’re in a position to meet the bonus requirements, grab this bonus before it’s gone. Here is my step-by-step guide on how to earn your Fairwinds Credit Union bonus.
  • Chime ($100) - Chime is a free bank account that offers a referral bonus if you use a referral link and complete a direct deposit of $200 or more. In practice, any ACH transfer into this account triggers the bonus. This bonus is easy to earn and posts instantly, so you’ll know if you met the requirements as soon as you move money into the account. I wrote a step-by-step guide on how to earn your Chime referral bonus that I recommend you check out.
  • US Bank Business ($900) – This is a fairly easy bank bonus to earn, since there are no direct deposit requirements. In addition, you can open the Silver Business Checking account, which comes with no monthly fees. Check out how to earn this big bonus here.
  • GO2Bank ($50) - GO2Bank is an easy bank bonus that I recommend people take advantage of if they have an easy way of meeting the direct deposit requirement. I like that it’s easy to open the account and that the bonus pays out quickly. Check out my step-by-step guide on how to earn your GO2Bank $50 referral bonus.
  • Current ($50) – Current is a free fintech bank that’s offering new users a $50 referral bonus after signing up for an account using a referral link. Current is an easy bonus to earn and also gives you access to three savings accounts that pay you 4% interest on up to $2,000. That means you can put away up to $6,000 earning 4% interest. That’s very good and makes Current an account I recommend to everyone. Check out my step-by-step guide on how to earn your Current Bank bonus.
  • Novo Bank ($40) - Novo bank is a free business checking account that’s currently offering a $40 bonus if you open a Novo business checking account using a referral link. In addition to being a good bank bonus, Novo is also a good business checking account. It has no monthly fees or minimum balance requirements and operates a good app and website. Indeed, it’s the business checking account I currently use for this blog. Check out my post on how to easily open a Novo account.
  • Varo ($25) – Varo is a free fintech banking app similar to Chime or Current. It’s currently offering a $25 bonus to new users that open a new Varo account with a referral link. The bonus for this bank is very easy to meet, all you need to do is spend $20 within 30 days of opening your Varo account. Check out my step-by-step guide to learn how to earn this bonus.
financial panther

Kevin is an attorney and the blogger behind Financial Panther, a blog about personal finance, travel hacking, and side hustling using the gig economy. He paid off $87,000 worth of student loans in just 2.5 years by choosing not to live like a big shot lawyer.

Kevin is passionate about earning money using the gig economy and you can see all the ways he makes extra income every month in his side hustle reports.

Kevin is also big on using the latest fintech apps to improve his finances. Some of Kevin's favorite fintech apps include:

  • SoFi Money. A really good checking account with absolutely no fees. You'll get a $25 referral bonus if you open a SoFi Money account with a referral link, and an additional $300 if you complete a direct deposit.
  • 5% Savings Accounts. I'm currently getting 5.24% interest on my savings through a company called Raisin. Opening a Raisin account takes minutes to complete, it's free, and all of your funds are FDIC-insured. I explain how it works, why I'm now using it to store my emergency fund and any other cash savings I have, and why I recommend everyone check it out in this review.
  • US Bank Business. US Bank is currently offering new business customers a $900 signup bonus after opening a new account and meeting certain requirements.
  • M1 Finance. This is a great robo-advisor that has no fees and allows you to create a customized portfolio based on your risk tolerance. You also get $100 for opening an account.
  • Empower. One of best free apps you can use to monitor your portfolio and track your net worth. This is one of the apps I use to track my financial accounts.

Feel free to send Kevin a message here.

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